libv4l conversion problem
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Hi,
Quoted 6 lines · Gary Thomas
Hans,
Please forgive the direct email; try as I might, I could not find any other vehicle to discuss this (feel free to steer me to the proper place).
There indeed is a lack of a mailinglist or forum for v4l-utils. This has been discussed before and it was decided that given the low amount of discussion around v4l-utils we will just use the linux-media mailing list for this (added to the CC).
Quoted 2 lines
I'm working with the latest code (0.8.1) on an embedded ARM system which has a camera that can only deliver UYVY422 data.
Ok, so when you say UYVY422, I assume that this is packed data, right, so not some planar format, right? libv4l supports converting UYVY422 packed data to:
RGB24
BGR24
YUV420 (planar)
YVU420 (planar)
Quoted 2 lines
The problem I have is that most everything else, e.g. I'm trying to run cheese, wants YUYV422.
cheese specifically should be happy with almost any YUV or RGB format as it uses gstreamer. I know for a fact that it works happily with libv4l's YUV420 (planar) output.
Quoted 2 lines
Should the library be able to handle this case (device only does UYUV and application wants YUYV)?
It does not support converting to packed yuv formats, but it does support conversion to planar yuv formats. At least for cheese this should work fine.
Quoted 1 line
Any suggestions how I move forward?
Make sure that your gstreamer is compiled with libv4l support.
Regards,
Hans